Forbidden to have sexual relations with one’s wife’s sister while the wife is still alive.
This mitzvah prohibits marrying or having relations with a wife’s sister while the wife is still alive. The Torah refers to such a union as creating rivalry (tzarah) between sisters, which undermines family harmony and dignity. This prohibition applies only during the wife’s lifetime; if she passes away, her sister is not forbidden by this law.
Commentary & Classical Explanation:
Represents the concept of spiritual intentionality, purity, and sanctity—set apart for a higher purpose.
Signifies awe and reverence toward Hashem—living with awareness of His greatness and presence.
Mitzvot that define and deepen the relationship between a person and their Creator. These include commandments involving belief, prayer, Shabbat, festivals, sacrifices, and personal holiness — acts rooted in divine connection rather than human interaction.
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